I really liked iPhoneyAdium by Alexander Weiss [link] but I wanted a blue version to match the other icons in my dock. So I decided to create one and here it is. Thank you to Alexander, he kindly granted me permission to submit this.
There are two versions included:
1. PNG format at 128x128. When I had the .png files at 512x512, it caused jagged edges in the dock.
2. ICNS format at 512x512. The .icns files resized smoother in the dock.
Based on iPhoneyAdium by Alexander Weiss.
Original "Online" icon by Dirceu Veiga from FastIcon.com.
AdiumXtras.com thread [link]
Tested with Adium 1.2.7 on OS X 10.5.4